基于MAIAC产品的河南省...溶胶时空分布及影响因素分析 李尚志.pdf

第 45 卷 第 6 期 测绘与空间地理信息 Vol．45，No．6
2as a higher aerosol level than the southern part，while the western part is lower than the eastern part．
Places where there are plains and basins are higher than mountainous areas． The average seasonal value of AOD is 0．64，0．63，0．61，
and 0．57 for winter，spring，summer，and autumn，respectively． The spatiotemporal distribution pattern of aerosol was greatly affected
by ground elevation． Finely vegetation－covered places have a rather low aerosol standard． The land surface temperature has a negative
correlation with AOD． Air pollutants like NO2 and SO2 have a significant positive relationship with AOD． Meanwhile，the correlation
between AOD and particular matters like PM10 ，PM2．5 are 0．37 and 0．48，which indicates that PM10 and PM2．5 are an essential compo-
nent of atmospheric aerosols．
Key words: MAIAC; aerosol optical depth; spatiotemporal distribution; influencing factors; air quality
自于自然环境和人类活动［1］。大气气溶胶能通过散射、
0 引 言
吸收等途径改变大气化学过程，对气候变化、大气环境、
大气气溶胶是指悬浮在大气中的、粒径在 0． 001— 人类健康等都有着不同程度的影响，如气溶胶粒子的增
100 μm之间的固体或液体颗粒物，如陆地灰尘、海盐微 多会导致高空云量增加、太阳辐射减少，导致雾霾和烟雾
粒、火山喷出物、微生物